http://bugs.winehq.org/show_bug.cgi?id=14608
--- Comment #52 from Paul "TBBle" Hampson Paul.Hampson@Pobox.com 2010-05-12 07:57:06 --- Just noticed this was closed as a duplicate, but that's not accurate. It happens that implementing vertex blending fixes this bug, but it's not the only solution, since all that does is bypass an odd behaviour in Microsoft's d3dx9_30.dll.
If anything, this is a duplicate of 8357...